[time-nuts] BG7TBL FA1 frequency analyzer

[Christoph Kopetzky]

Hi Mark,

interesting post.
So is the FA1 compatible with the TimeLab or Stable32 software?
And could I do phase noise measurements with it like the TimePod?


Chris

Am 30.08.2019 um 22:57 schrieb Mark Sims:
> (Hopefully this is not a duplicate post...  hotmail has been having issues)
>
> The FA1 is a small, USB powered frequency counter.   You supply it with a 10 MHz reference and an input frequency of 1 .. 80 MHz.   It outputs a text string of the measured frequency every second.  They cost around $80 .. $120.
>
> Apparently there is a PLL inside... the text string has a "PLL unlock" flag.  There is no info on how it works and I have not opened mine up.
>
> I did a simple noise test on one where the input and ref clocks were from a Tbolt.  It looks like the measurement noise is around +/- 0.0002 Hz.
>
> Lady Heather can now read it.  Attached is a screen capture of the noise test.
>
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